Dipeptidyl peptidase-4 inhibitors (DPP-4Is) have been in the type 2 diabetes tool box since 2006. They are associated with a modest decrease in A1c and a mostly neutral impact on weight. There are currently four approved agents in the US and there are also five approved agents that combine a DPP-4I with metformin and one that combines a DPP-4I and a thiazolidinedione.
How well versed are you in the language of DPP-4I? Find out in 5 short questions.
1. Which one of the following DPP-4I combination drugs does NOT contain metformin: